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Sept. 22, 2010

Vol. 111, No. 1


Princeton and the telescope

Sizes refer to diameter of lens or mirror

Published in the September 22, 2010, issue

Halsted Observatory
Princeton University Archives
Halsted Observatory

1882 Alvan Clark, 23"

Halsted Observatory (on site of today’s Joline Hall) has largest ­telescope in the hemisphere, except for U.S. Naval Observatory. Cast in Paris, the lenses were exhibited at the Centennial Exhibition, Philadelphia.

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CURRENT ISSUE: Sept. 22, 2010
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Video: Picturing the universe
View a series of images from the Sloan Digital Sky Survey, captured by a telescope at Apache Point, N.M., designed by Princeton astronomy professor Jim Gunn.